I plan to do a challenge run of Castlevania: Rondo of Blood in the future, and want it to be as difficult as possible.
As such, I want to know what route is the hardest.
So far, my route is as follows.
0 -> 1 -> 2' -> 3' -> 4' -> 5' -> 6 -> 7 -> Final
For Stage 2', I take the merman route to Stage 3'
For stage 3', I fall down the pit opened by the iron spiked ball to stage 4'
For stage 4', I take the waterfall route to stage 5'